I have one of the new 9mm Shield Plus pistols with the RDS cut. I put a Holosun 507k on it. Easy to conceal, accurate and just an all-around great EDC. Just waiting for more magazines to become available. I like the Plus pistols enough that I have 3 of them; the RMS cut optic ready, the standard 3.1" model and the Non-optics cut 4" PC version. They are all great little pistols.